Semperfifishing - Marine Electronics & Transducer Sales

Kohler Generator 4ESZ will not start

Old 03-22-2021, 10:31 AM
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Default Kohler Generator 4ESZ will not start

Turns over and tries to hit but quits as soon as the starter switch is released. I've confirmed all the shut down sensors are working correctly and have good fuel /fire. When the unit is turning over the amp gauges are showing zero current. From what I've read all issues lead to the control board. Anyone has some input before I purchase the control board?
Old 05-14-2021, 04:44 PM
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you might have to move the throttle arm and see if it comes up to speed but this unit wont stay running unless it sees 90volts coming out of it (run relay wont latch until then) it has a capacitor that regulates the voltage if you don't see the 90volts at startup. check that before anything else. leeward
Old 05-15-2021, 04:16 PM
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Sounds similar to the issue I had on our Northern lights gen. I replaced all 4 Relays, i'am sure it was just the R/R relay (run/relay).

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